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Accessing the Coordination Chemistry of Phosphorus(I) Zwitterions


  • The authors are grateful for financial support from NSERC, CFI, ORF, Western University and The University of Windsor.


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Go for the gold! Incorporating a borate anion into the backbone of a triphosphenium cation produces a unique zwitterionic phosphanide that can coordinate to one or two {AuCl} fragments depending on the steric bulk of the ligand (see picture; Au yellow, P purple, Cl green). Computational investigations show that in this μ-type ligand, the phosphorus atom behaves only as a σ,π donor.